You are very welcome. I'm always happy to help. Since this printer is stuck on that error message, you may not be able to access the reset menu anyway. Try this step first as you must get past this error before much else can be done.
These are the steps for a hard reset/power drain. This has been known to work if this can be fixed at all.
1. Remove all of the ink from inside the printer. This is a little trick for when you power it back on, the printer will try to search for the ink rather than get stuck on the blue screen.
2. Unplug the printer from the back of the unit while it is powered on.
3. Unplug the power cord from the wall/surge protector.
4. Seperate the cord from the module if the power cord seperates in the middle.
5. Let this sit for a few hours even. The purpose is to give the module time to reset completely.
6. Next, make sure to plug the power cord directly into a wall outlet after it is put back together in the middle.
7. Lastly, plug it into the back of the printer. Let me know if anything changes.
I will go ahead and set the expectation that this likely occured due to a firmware interruption, lightning strike, or extreme malfunction. That error along with the blue screen is nothing nice. You may benefit from calling in to HP tech support but I will try some of my tricks so that others like you with this problem can try them on the public forums. I'm more than happy to offer that at the very least. :)